Method and means of impressing bronze designs



- 20, 1938. P. L. GRAUPNER 2,130,425

METHOD AND NEANs oF INPREssINe BRONZE DESIGNS Filed Apri; e, 1935 2shams-sheet 1 Fig. 4

Sept. 20, 14938.v P. L. GRAUPNER METHOD .AND MEANS OF IMPRESSING BRONZEDESIGNS 2 lsheets-slm?. 2

Filed April 6, 1935 Fig. 2

fazz/ Zazzz'fm Patented Sept. 20. 1938 MT1-:n STATES' METHOD AND MEANSOF IMPRESSING BRONZE DESIGNS Paul Louis Graupner, Kotzschenbroda,Germany,

assigner tc Universelle Cigarettenmaschinenfabril; J. C. Mueller & Co.,Dresden, Germany Application Aprile". 1935, Serial No. 15,009 I In.Germany December 22, 1934 s claims. l(cl. 1in-17s) t I This inventionrelates to the art of m'inting,

and has for an important object thereof the provision of means and animproved method for impressing bronze characters or designs on paperused in the production of cigarettes.

Another object of this invention is to provide a y means whereby bronzeor like powder may be applied to a paper strip or sheet in a mannerwhereby the 'color material will adhere to the paper in an even mannerand will not readily wipe oi on`account of handling of the paper. p Afurther object of this invention is to provide a method and means forapplying a powder color to a paper in a manner whereby the color will bemaintained on the paper so that the subsequent movement of the printedpaper through a cigarette machine will not eiect a clogging yof themachine by reason of the powder color used in impressing the characteror object on the 2@ paper being vwiped or otherwise removed from 'thepaper; f

With the foregoing and other objects in View, the invention will be morefully described hereinafter, and will be more particularly pointed outg55 in the claims appended hereto. L

' In the drawings, wherein like symbolsrefer to like or correspondingparts throughout the several views,

Figure l is a detail side elevation of a printing machine embodying thisinvention, the operating features of the invention being showndiagrammatically.

, Figure 2 is an enlarged side elevation of the impressing means usedwith the machine disclosed in Fig. l.

Figure 3 is a fragmentary plan view of the paper strip having charactersor designs printed thereon in accordance with this invention.

Referring to the drawings, the letter Z designates a sheety of paper orlike flexible material, and in the present instance the paper Z is of acharacter similar to that used vin the production Xof cigarettes.Heretofore attempts have been made to print or otherwise impressletters,

characters or designs upon a sheet or strip of paper, but as this mustbe'done prior to the rolling of the `cigarettes, the -powdered colorwhich is' in a dry state when applied will not satisfactorily adhere tothe paper, and the rubbing ofi of the powder seriously affects theoperation of the cigarette machine. At the same time, when the cigaretteis finally completed the indicia, design or the like is damaged.

Thisstrip of paper Z is attached at one end to a supply roll R as shownin Figure 1 and may rst pass through a printing means, generallydesignated as P at which point any suitable matter may be printed uponthe sheet Z with a liquid or paste-dike ink.

O After passing through the printing means P the sheet Z is trained overan idling roller II and then passed over a drum IU which is rotatably`carried by a shaft 3|. The shaft 3| is mounted on one end of a rock arm32 pivoted as at 33. A driven gear 28 mounted on a shaft 9 5' isdisposed adjacent the drum I0, and this shaft 9 hasmounted thereon aprinting cylinder or member 8. This printing cylinder or member 8 l hasa suitable printing surface carrying the desir`ed indicia, design orcharacter which may be 10 impressed upon the surface of the sheet Z.

A second printing cylinder Il which is mounted on a shaft I8 is mountedin a position for engagement with the sheet Z and is disposed adjacent asecond impression cylinder I2 carried by 15 a shaft I3l The shaft I3 ismounted on one end of a secondrock lever- I4 which is rockably mountedon a shaft I5;

A driving gear 25 is mounted on a shaft 24 and may be connected toa'suitable source of 20 power supply. A gear 26 is mounted on a shaft I8and meshes with the gear 25, and a driven gear 28 is mounted on theshaft 9. Rotation of the gear 28 is effected through a gear 2l whichmeshes withthe gear 23 and the gear 28. 25v

In accordance with the present method and means of placing indicia,characters or designs upon the sheet Z, a reservoir I which is adaptedto contain cementitious material in liquid form is mounted in a positionwhereby the cementi- 30 tious material may be removed from thereservoirby a drum 2, the periphery of which extends into the reservoir.'A transfer drum or roller ii is mounted on a rock arm 3 and is adaptedto contact at timed intervals with the supply drum 35 or roller 2.

TheY cementitious material on the transfer roller or drum i istransferred to a grinding roller or drum 5 which is mountedon a bracket33.

The cementitious material on the transfer member 5 is smoothed by acounter-rolleror drum 6 also carried by the bracket 36 and the peripheryof which contacts withthe drum 5. A transfer roller l is also carried bythe bracket 45 36 in spaced relation to the counter-roller 6 and isdisposed in the path of the movement of the printing cylinder or member8. Adjustment of the bracket arm 36 may be had by means of a thumb screw3l so that the proper contact of 50 the transfer roller 'l may be hadwith the iinpression cylinder 8.

In the present instance the reservoir contains a mucilage or likecementitious materiaL'and the impression made upon the sheet by the im-55 pression cylinder8 is similar to 'the impression also made upon thesheet Z by the powder color printing, cylinder Il, although the size ofthe impression made by the cylinder 8 is larger than the size of theimpression made by. the cylinder ried by the printing cylinder I1 willadhere to the sheet Z, and this larger base impression wid permit slightvariance in the positioning of the impressions, so that if theimpressions are slightly out of register all of the powder impresseduponthelsheet Z by the cylinder I1 will stick to the sheet Z.

A powder or color reservoir 23 is mounted adjacent the cylinder I1, anda transfer drum or cylinder 20 mounted on a shaft 25 extends into thereservoir t3 and has thesurface thereof disposed in a position forcontact with the printing cylinder i1. Preferably the shaft 2l iscarried by the side walls of the reservoir 23, and the position of the.transfer drum 2t relative to the printing cylinder ii is controlled bymeans of an adjusting screw 3s. The reservoir 23 also carries a shielddi! disposed beneath the drum and between this drum 2i@ and the top ofthe sheet Z so that none of the powder on the surface of the transferdrum 20 will drop onto the surface of the sheet Z.

Adjustment of the rock arm 32 is effected by means of an adjusting screw35 which engages the arm 32 adjacent the end opposite from the shaft 3|,and a spring 34 holds .the end of the arm 32 in contact with the screw35. In like manner the rock arm I4 is adjusted by means of an adjustingscrew I6 which engages the arm I4 at the end opposite from the shaft I3,and a spring 30 maintains the arm I4 in contact `with the adjustingscrew I6.

In accordance with the method and means hereinbefore described, themucilage or cementitious material is first applied to the face of thesheet Z, and the impression made by the base printing cylinder 8 isslightly larger than the impression made by the color printing cylinderI1. When the driving gear 24 is rotated a rotation of the gear 26 iseffected, and likewise rotation of the gear 28 through the gear 21.Preferably the gears 26, 21 and 28 are of the same size so that thecylinder 8 will rotate at the same speed as the cylinder I1.

As the printing surface of the cylinder 8 contacts with the transfercylinder or roller 1 a transfer of the mucilage or cementitious materialis effected, and when the printing surface of the cylinder 8 contactswith the surface of the sheet Z the impression in mucilage orcementitious material will be made. While this cementitious material isstill soft the color cylinder I1 will impress the colored powder uponthe surface of the mucilage or cementitious material. Preferably-,thetransfer'drum or roller 20 is rotated through the medium of a gear I9mounted on the shaft I8` which meshes with a gear 22 mounted on vtheshaft 2l, and the ratio of the gears I9 and 22 is such that the linearmovement of the surface of the transfer roller 2G is substantially thesame as the linear movement of the periphery of theprinting cylinder I1.

After the proper color has been impressed upon the sheet Z it may bere-rolled upon a supply roll or passed directly into the 'cigarettemachine, the details of whichy form no part of the present Invention. InFigure 3 there is disclosed a sheet` Z upon which the base impression 38has been impressed, and upon this base impression a top orcolor-impression 4I has been made bythe powdered color material 4Icontained in the reservoir 23. It will be here noted that the baseimpression is slightly larg'er ,than the color or top impression so thatany over-running powder will be retained on the sheet Z and notpermitted to drop off or be rubbed off during the movement of the lsheetZ through the cigarette machine.

It is obvious that various changes and modifications may be made in themethod hereinbefore described and in thel details of construction and 1design of the above embodiment without departing from the spirit thereofor the scope of the ing the web trained thereover, means for elasticailytensioning said supporting means to bias the said rollers against thecylinders, means for placing a mucilaglnous substance on the basecylinder for impression on the sheet,l and means contacting with thecolor cylinder for placing a powdered color thereon, said color cylinderbeing so timed with respect to said base cylinder whereby the powderedcolor on the color cylinder will be impressed on the mucilaginousimpression.

2. A means for placing powdered color impressions on a web comprising abase printing cylinder, a color printing cylinder, means for rotatingthe cylinders in unison, a pair of impression rollers disposed oneadjacent each cylinder, a. lever support for each of said rollersattached to each of said levers biassing it to swing to place animpression roller against a cylinder, said rollers having the webtrained thereover, means for placing a mucilaginous substance on thebase cylinder for impression on the web, and means contacting with thecolor cylinder for placing a powdered color thereon, said cylindersbeing timed to superimposeA the color on the base impression.

3. A means for placing powdered color impressions on a web comprising a'base printing cylinder, a color printing cylinder, means for rotatingthe cylinders in unison, a pair of impression rollers disposed oneadjacent each cyl-A inder, a lever supportfor each of said rollerspivoted to support the roller swingably, a spring attached to each ofsaid levers biassing it to swing to place an impression roller against acylinder, an adjustable swing limiting means for each lever to fix theextent of movement of the impression roller towards the cylinder, saidrollers having the web trained thereover, means for placing a`|mucilaginous substance on the base cylinder for Aimpression on theweb, and means contacting with the color cylinder for placing a powderedcolor thereon, said cylinders being timed to superimpose the color onthe base impression.

. PAUL LOUIS GRAUPNER.

'40 pivoted to support the roller swingably, a spring

